Showing posts with label conjunction. Show all posts
Showing posts with label conjunction. Show all posts

Monday, December 07, 2015

Moon, Comet and Venus Continue Their Dance

Comet C/2014 US10 Catalina (blue-green fuzzy dot to the left), the moon and Venus to the right
I predicted last week that the viewing would get better all week for Comet Catalina, with an interesting configuration in the sky with the moon and Venus joining the comet this morning (above).  The three celestial bodies played hide and seek for hours after they rose, then the hazy cloud cover seemed to close, so I caught a few final exposures before picking up my tripod and heading inside.  Fortunately the very last few frames did let all three shine through the clouds just enough that I could show them to you here.

The 14% crescent moon was a lot brighter than the comet, but it'll only be an 8% sliver tomorrow morning, and its rise will follow Venus and the comet, so comet photography will be good before the moon rises, then you can try for all three again as the moon rises.

The image above was captured on a Canon 5D Mark III and EF 85mm f.1.8 lens and cropped from the larger field of view.  The 85mm lens should just fit the three objects again tomorrow, or I might go to 70mm for a wide shot like this.  For shots of the comet only, I'll probably use my Canon EOS 70D on a sky tracking mount, perhaps with a Canon EF 70-300mm f.4-5.6 IS lens to get an effective focal length of up to 480mm.

The screen shot to the right shows what the configuration will look like tomorrow.

Saturday, September 06, 2014

Mars, Saturn and Moon Conjunction Over Bodie's 1937 Chevy August 30

Mars, Saturn and the moon over Bodie's 1937 Chevy on August 30
I wrote a blog post last week about the opportunity to capture the moon, Mars and Saturn on the evenings of August 30 and 31.  This is the shot I planned with +The Photographer's Ephemeris to place them over the rusty 1937 Chevy in California's Bodie State Historic Park.

Moments earlier I had been catching sunset on Main Street, and Mars and Saturn were just becoming visible over the DeChambeau Hotel:

Mars and Saturn become visible to the left of the Moon over Main Street in Bodie 




It's fairly easy to plan for interesting photos to capture these astronomical events if you use any one of a number of astronomy or astrophotography planning applications to anticipate potential compositions.  I mentioned several in my blog post last week:
For The Photographer's Ephemeris, check out the new Web version of TPE, since Google has retired the version of Google Maps used in the prior desktop app.

Tuesday, August 26, 2014

Plan Your Moon, Mars, Saturn Conjunction Photo August 30 & 31

Shooting the moon, Mars and Saturn over Bodie's 1937 Chevy at 9 pm, Saturday August 30, 2014
Last weekend offered the opportunity to shoot the crescent moon near Jupiter and Venus.  Now that the new moon has passed, as the crescent moon moves into the evening sky, we have the opportunity to catch the moon with Mars and Saturn on consecutive nights.  The first night will be August 30, when the moon will be roughly 11 degrees high at 9 pm (here at 38 degrees latitude) as the sky gets dark, near bright star Spica and west of the two planets.  The screen shot from +The Photographer's Ephemeris ("TPE", free on a PC) shows a possible composition shooting over the 1937 Chevy in Bodie State Historic Park.  The park closes after 6 pm, but we're bringing a group in for a night photography workshop, so the crescent moon and planet conjunction event is a nice bonus opportunity for us.

The even tighter and more interesting configuration will be on the following night August 31 when the moon joins Saturn and Mars to form a close triangle.  At 9 o'clock for mid-northern latitudes the moon will be southwest and roughly 17 degrees high, moving westward and setting over the next hour.

To plan some shots for this celestial event, you can use apps such as The Photographer's Ephemeris, +PhotoPills , StarWalk and Sky Safari+:
StarWalk Screen showing conjunction August 31
Here's a screen shot from the StarWalk app showing the relative positions of Mars, Saturn and the moon. (The appearance of them on the screen is not to scale.)  Using this app to see the relative position of the three objects, then using TPE or PhotoPills to pick natural landmarks on the horizon or man-made objects in your foreground to place them over, you can plan for some interesting compositions well in advance.  A wide shot to capture a foreground subject might work well at 14-24mm, while a telephoto composition might range from 50 mm to 200mm.  You can capture individual planets or the moon at longer focal lengths.  I may use my crop sensor Canon 70D to get an extra effective 1.6X magnification, so my 70-200 mm lens with 2X teleconverter shooting at 400 mm will produce an effective 640 mm.

Saturn over Mars (upper right)
You can scout potential locations for your shot all week, just look for the red light of Mars to the southwest as darkness falls, in the evening about an hour after sunset, and Saturn is the bright planet just to the right of Mars.  This is a location I scouted and ruled out earlier this week due in part to excessive light pollution just out of frame to the right.  Mars is the red planet in the upper right (and even easier to see in the reflection), while Saturn is just to the right.  The crescent moon between and above them will make a tight grouping, so I should bring my Canon 50 mm f/1.4 and 85 mm f/1.8 lenses to be able to use wider apertures and lower ISO settings for less noisy results.

A handy planning site for the Moon, Mars, Saturn conjunction event on August 31 tries to recognize your location to be able to give accurate times for visibility of Saturn in the evening, as well as set times for Saturn, the moon and Mars: http://in-the-sky.org/news.php?id=20140831_15_100

Photos of the Moon, Venus and Jupiter Conjunction August 23

Jupiter, moon and M44 Beehive Cluster rising yesterday, August 23.  A short while later Venus joined them, below Jupiter.
The Internet, mobile phones and social media can provide some interesting opportunities at times.  I learned about a close Venus - Jupiter conjunction coming up on August 18 from the SkyWeek+ app from +Sky & Telescope.  I looked up more information, and found an excellent planning guide by +Universe Today.  I shot the August 18 conjunction, only to have Universe today include it moments later in their write-up on the event!  I looked up more articles, discovering a mention in an +EarthSky article of the moon joining them in the sky on the morning  August 23.  But there would be a nice practice day August 22, which I shot.  As it turned out, EarthSky included my Aug 18 Venus - Jupiter image in an excellent planning guide to the August 23 event.

Venus, Jupiter, moon and Beehive Cluster in conjunction 
I checked my app The Photographer's Ephemeris to confirm a good composition for the moon rise angle at Mono Lake.  I then checked the StarWalk app and determined that the last of the three celestial bodies rising on the 23rd,Venus, would be rising at 4:53 at Mono Lake.  So I arrived onsite yesterday at around 4:30, I was moving my cameras into position around 4:45, and I was just getting my exposures settings set as the moon rose next to Jupiter and its moons (above).  Venus was the next to arrive (right), and its light was colored bright red in the atmosphere choked with smoke from fires in the American West.

Apparently no other photographers had planned to shoot here, although one car did pull in and leave its headlights on briefly, providing some unplanned light painting on the tufa-strewn shoreline.  The sky gradually brightened as twilight "blue hour" progressed, and the view of the moon became more clear and it tone more white as it rose above the densest slice of atmosphere.  Venus increased in apparent brightness as it rose, and hints of the approaching sunrise could be seen on the horizon.


Venus, Jupiter and moon during blue hour
As the planets and moon rose together, I had to zoom out to a wider 70 mm focal length to fit them in comfortably.  Incresed color in the sky was offset by the relative fading of the planets as the sky brightened.

Later this week we'll have this sort of opportunity all over again as the crescent moon yields to the new moon, then becomes a crescent again as it switches to the night sky, and moves close to Mars and Saturn.  I'll talk more on that in a following post here on my blog, and I'll post updates on Twitter (@jeffsullphoto) as well.

The moon, Jupiter and Venus as dawn approaches on August 23
To the right is one of my last shots of the moon with Jupiter and Venus last Saturday as the sky continued to brighten.

Update June 2017: My photo has been published as the lead photo in an article in the August 2017 Sky and Telescope Magazine by Don Olson. A description of Don's investigation into a poem by Lord Byron appears on the Texas State university Web site, along with a copy of this photo:
'Celestial Sleuth' identifies Lord Byron's stellar inspiration www.txstate.edu/news/news_releases/news_archive/2017/June...

Thursday, August 21, 2014

Venus Jupiter Conjunction August 18 to Add Moon August 23

Venus plus Jupiter with four of its moons before dawn August 18
Venus - Jupiter Aug 18
The Venus -  Jupiter Conjunction was a rare event to catch Monday morning before dawn, as they slowly rose above the horizon as dawn approached.  It's always great to be out in the early morning, as many animals are active and others start to stir.  Two great horned owls gently called back and forth.  Black bears have been in our neighborhood at night lately gorging on peaches, and plums, blackberries and apples are starting to add to their buffet as well.  A group of coyotes were howling in the small orchard down the street, no doubt harassing a bear getting in the way of their hunt for rabbits and quail.  It was nice to have some moonlight for illumination, so I'd be able to see a bear approaching if I heard one leaving the orchard in my direction.  I kept a flashlight nearby to alert any bears to my presence, to avoid an awkward encounter.  Being so well fed our bears are large.  They're not overtly aggressive and they'll generally run away from people, but it's still a good idea not to startle one at close range.
As the week progresses Venus and Saturn remain close all this week, with the crescent moon arriving in their vicinity on the mornings of August 22, 23 and 24. Their closest encounter will be on Saturday the 23rd, with the two planets and the moon forming a triangle before dawn, 7 degrees on each side.

Update Friday morning, August 22:  The moon lined up with Venus and Jupiter this morning.  The moon will drop next to Venus and Jupiter tomorrow morning before dawn, to form a triangle.  Venus rose today at 4:53, so for best results, start looking by 5 am.  Where I plan to shoot tomorrow, all three celestial bodies should be above the horizon by 5:10 or so.  The times will be similar for other mid northern latitudes, with small adjustments for your position on the earth and in your time zone.

Plan for an interesting composition for the conjunction tomorrow using any of these four astronomy apps:

Tutorial on Moon Photography Planning

http://activesole.blogspot.com/2013/10/tutorial-on-moon-photography-planning.html  


The rest of the story:

As I shot Venus and Jupiter this morning there were large, fresh bear prints on the ground, and half of an apple that the bear carried 1/2 mile but couldn't finish.  The bears start arriving late at night this time of year, but as they compete for fruit in neighborhood fruit trees, they start to come earlier and earlier.

This large bear climbed up a neighbor's tree last year when we arrived to take his picture.  He growled at me at first, but stopped when that tactic didn't result in our departure.  On this night, our neighbor had called us at 8 pm to tell us that there was a huge bear which "looks like a bison", his back scraping the branches of the apple trees.  He definitely was well fed, and is probably back for more feasting this year.

Monday, August 18, 2014

Venus - Jupiter Conjunction at Dawn Today


Venus and Jupiter put on a show in the sky this morning as sunrise approached.  As seen from earth these two bright planets appeared to pass within 0.3 degrees of each other in the sky.

For the next shot I used a crop sensor camera to get a little more effective zoom out of my lenses:
Canon 70D, 70-200mm f/4 IS L lens, 2X teleconverter
400mm focal length x 1.6 crop factor = 640mm equivalent


I uploaded one of my shots to Flickr, and +Universe Today had already blogged it moments later.  Thanks +Nancy Atkinson!
Here's a link to the blog post by Universe Today:

Tuesday, May 28, 2013

Venus, Jupiter, Mercury Conjunction (1080p, 30fps)



The planets Jupiter, Venus and Mercury are close together in the evening sky this week, so every night I've been trying to capture them together on the horizon in the twilight hours before they set. The first night the clouds were too thick. The second night I was shooting sunset in high winds at Mono Lake with the Sierra Nevada as a high western horizon, so I caught a few pictures of the planets, but they set too quickly to capture a time-lapse video. The third night was just right, relatively clear to the west, I was in a high shooting position with an apparent horizon lower than my position (less than 0 degrees elevation), and fortunately that was Sunday May 16, the night when they'd be closest together, forming a tight triangle.

There was still wind to deal with so I changed position a few times to minimize it. I could only use one camera because I had loaned my daughter one of my quick release plates the day before and it was still on her camera back home. There wasn't a lot of light and I was shooting with a 2X teleconverter on my 70-200mm lens at close to 310mm, so my aperture was limited to f/8, forcing me to bump up the ISO to minimize shutter speed in that wind. Fortunately I worked out all the trade-offs in time to capture about four hundred frames, enough to create this time-lapse video. 


Here's how my four days of effort to capture this event turned out:


Pursuing the Venus, Jupiter, Mercury conjunction on May 24, 2013.
May 24 from Lake Tahoe


Pursuing the Venus, Jupiter, Mercury conjunction on May 26, 2013. Too high of a horizon at Mono Lake!
May 25 from Mono Lake

Pursuing the Venus, Jupiter, Mercury conjunction on May 26, 2013, just right with a low horizon.
May 26 from Monitor Pass













Pursuing the Venus, Jupiter, Mercury conjunction on May 27, 2013. Too cloudy over Lake Tahoe!
May 27 from Lake Tahoe

Tuesday, January 29, 2013

Moon Jupiter Conjunction


Moon-Jupiter Conjunction, January 2013 (1000mm, 1080p, 15fps) from Jeff Sullivan on Vimeo.

I looked outside the other night and saw a bright object next to the moon.  Sky at Night Magazine had predicted that there would be a Moon and Jupiter conjunction on January 22, and I realized that it was about 6 am Uninversal Time on the 22nd.  I've taken photos of Jupiter at 400mm before, and those images can crop down to an effective 1000mm or so with no loss of resolution, so I set my camera outside to fire off a few hundred frames.

I had the intervalometer set to capture one frame every 3 seconds, and at that focal length and crop Jupiter only stays in a 16 x 9 HD-shaped frame for 210 shots, so I get either 7 seconds at 30 frames per second or 14 seconds at 15 frames per seconds.  The movement seemed a little less jerky at the slower frame rate, so that's what I've uploaded.  The movement could probably be smoothed out by taking the 30fps version and using software to simulate slow motion and inserting intermediate frames which track the movement of the moon and Jupiter... some day when I have all the time in the world, and the ultimate post-processing suite to go with it!

Wednesday, February 29, 2012

Astronomical Events Coming in March 2012

To get the best possible results with my astrophotography, I try to plan ahead to shoot as many astronomical events as I can. Here are some of the opportunities you'll have in the next month:

March 3/4: Mars at Opposition.  Mars will be as close as it gets to the earth, and will rise in the evening as the sun sets.
March 5: Mercury may be visible shortly after the sun sets through March 12, but on March 5 it reaches it maximum distance from the sun.
March 7: The nearly-full moon will rise just before sunset. Mars will rise right behind the moon in the evening sky.
March 8: Full moon.
March 9: The nearly-full moon will set just after sunrise.
March 10 - 20: Venus and Jupiter Conjunction
March 12: Arguably the best day of the Venus - Jupiter conjunction, as Jupiter will be just above Venus.
March 21: Thin crescent moon rises shortly before sunrise.
March 22: New Moon. March 21-24 will be good nights for star trail photography!
March 24: Thin crescent moon sets shortly before sunset.
March 24-25: Conjunction of Venus, Jupiter and the crescent moon.

I'll be out shooting with 25-30 of my photographer friends in Anza Borrego State Park and Death Valley National Park in the March 2-10 timeframe, and soon I'll be announcing photowalks for April, May and June.  The best place to catch my announcements will be on Google+:
http://www.Gplus.to/JeffSullivan